%I
%S 3,5,5,7,6,10,11,13,10,14,17,19,12,20,21,25,22,26,20,28,29,31,34,38,
%T 35,39,24,40,41,43,42,50,44,52,51,55,40,56,59,61,58,62,65,69,71,73,68,
%U 76,70,78,48,80,82,86,87,91,91,95,84,100,101,103,88,104,107,109,102,110,80,112,111
%N List of pairs of "twin numbers": Omega(n) = Omega(n  2^Omega(n)), where Omega is A001222.
%C The kprimes = numbers that are divisible by exactly k primes (counted with multiplicity).
%F a(2n+1) = A175766(n) = a(2n) + 2^A001222(a(2n+1)).
%e "Twin numbers" are (3, 5), (5, 7), (6, 10), (11, 13), (10, 14), (17, 19), (12, 20), (21, 25), (22, 26), (20, 28), (29, 31), (34, 38), (35, 39), (24, 40), (41, 43), (42, 50), (44, 52), (51, 55), (40, 56), (59, 61), (58, 62), (65, 69), (71, 73), ...
%Y Cf. A175766, A001222, A077800, A175612, A175765.
%K nonn
%O 1,1
%A _JuriStepan Gerasimov_, Sep 01 2010
%E Rewritten by _Charles R Greathouse IV_, Sep 03 2010
